'Blue or yellow tennis ball?' - The question that is most concerned by the world today

The color theme of tennis balls is so interesting that even tennis star Roger Federer participates in the debate.

After the intense controversy about the black-blue dress - white gold, blue-gray shoes - white pink, another object made the online community flutter about colors. That's the tennis ball.

According to Today, the Twitter community came up with a fierce debate over the question: "In the end, the tennis ball is green or yellow?" . More than 30,000 Twitter users enthusiastically participated in commenting on this issue.

A Twitter account posted questions about the color of tennis balls.

Currently, the network community is divided into 3 streams of opinions. In which 52% of netizens identified the tennis ball as green, 42% said the ball was yellow and the remaining 6% gave another option.

Tennis superstar Roger Federer (36, Swiss) also jumped in and made a conclusion after a fan asked him about the true color of the tennis ball. Roger answered that it was yellow, which meant that the win belonged to 42% of Twitter users.

Tennis superstar Roger Federer answers the question "Blue or yellow tennis ball?"

However, some of the 52% who chose the blue answer did not believe in the answer of the tennis superstar and posted the state of pressing.

The account tayloralbums expressed: "I can't believe that tennis ball is yellow. I have seen it and always think it is green."

Audra_spiven account confirms: "Blue tennis ball. Why bother about this problem? Roger Federer is wrong."

Currently the debate has not ended and on many international forums, the number of people who favor the green ball plan is a little bit better than the other options.

According to the official spokesperson of the International Tennis Federation (ITF), the outside tennis ball is covered by a yellow or white felt layer . However, many people point out that this coating is in fact a "light green" color, a blend of green and gold, which can confuse people in different lighting or viewing conditions .